Stiffener type for end supports is assumed as a non-rigid end post.
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For higher steel grades Design resistance Non-rigid end post Stiffener design to resist shear buckling is not provided in midas Gen. 12ġ3 Resistance of Cross-Sections Shear Buckling The shear buckling resistance for webs without intermediate stiffeners is calculated, according to section 5 of EN, if For steel grades up to and including S460. 11ġ2 Resistance of Cross-Sections Bending moment Design bending resistance Shear Design shear resistance in the absence of torsion The shear area A v is calculated based on the clause (3) as per EN Rolled I and H sections, load parallel to web: but not less than Design elastic shear resistance is not applied. Compression Design compression resistance In the case of unsymmetrical Class 4 sections, the additional moment due to the eccentricity of the centroidal axis of the effective section is considered in midas Gen. (3) FB: Flexural Buckling, SB: Shear Buckling, LTB: Lateral-Torsional Buckling 10ġ1 Resistance of Cross-Sections Tension Design tension resistance The design ultimate resistance of the net cross-section at holes for fasteners is not considered in midas Gen. (2) The thickness of two webs should be identical, and the member type should be column for the weak axis shear buckling check.
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Serviceability Limit State Check Vertical deflections Horizontal deflections 7 7ĩ Material Properties The nominal values of the yield strength (f y ) and the ultimate strength (f u ) for structural steel Steel Grade f y (N/mm 2 ) t 40mm f u (N/mm 2 ) f y (N/mm 2 ) t > 40mm f u (N/mm 2 ) S S S S Modulus of Elasticity = 210,000 N/mm 2 Poisson s Ratio ν = 0.3 Thermal Coefficient = 12 x10-6 / o C Weight Density = kn/m 3 9ġ0 Section table for the application of Ultimate Limit State Check I section Cross section Limit States SB Yielding FB (1) Strong Weak axis axis Doubly Symmetric N/A Singly Symmetric N/A N/A Box (2) N/A Angle N/A N/A N/A Channel N/A N/A Tee N/A N/A N/A Double Angle N/A N/A N/A Double Channel N/A N/A Pipe N/A N/A N/A Solid Rectangle N/A N/A N/A Solid Round N/A N/A N/A U-Rib N/A N/A N/A N/A N/A LTB Note: (1) Torsional Buckling and Torsional-Flexural Buckling are not evaluated.
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Ultimate Limit State Check Material Properties Section table for the application of Ultimate Limit State Check Resistance of cross-sections Buckling resistance of members II.